Revert "LPS-36642 build-lib-versions"

This reverts commit cf6443301b47ed64beaba8210407b204836170dd.
Revert "LPS-36642 rebuild ruby-gems"

This reverts commit 42114dafdb9a6db7d5e65c589096284c3771b5cd.
Revert "LPS-36642 Update jruby.jar to a recent version"

This reverts commit 6023a67962318c95286ea4ed584ae39240dc8ce8.